Created
December 4, 2014 11:56
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| activities = Activity.includes(:product) | |
| .order("product_id, created_at DESC") | |
| .select("DISTINCT ON (product_id) activities.*") | |
| .page(page).per(second_page_size).map do |activity| | |
| activity.product.activity = activity | |
| activity.product | |
| end | |
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